I was looking at a job earlier. Not a job I think that I want, but close enough that it was worth a look. It was for a group support worker dealing with, among others LGBT groups.The person specification says that the applicant "must identify as LGBT". That seems to me to be an unlawful discrimination, unless I am missing something.I know there are some exemptions with regard to gender, but I am not seeing how such an exemption could be applicable here.

1(1)A person (A) does not contravene a provision mentioned in sub-paragraph (2) by applying in relation to work a requirement to have a particular protected characteristic, if A shows that, having regard to the nature or context of the work—(a)it is an occupational requirement,(b)the application of the requirement is a proportionate means of achieving a legitimate aim, and(c)the person to whom A applies the requirement does not meet it (or A has reasonable grounds for not being satisfied that the person meets it).

Might fit. I would be surprised if there isn't relevant case law that makes it clear.